From 7db905e636f08ea5bc9825c1f73d77802e8ccad5 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Wed, 2 Sep 2009 14:01:24 -0700 Subject: rcu: Move end of special early-boot RCU operation earlier Ingo was getting warnings from rcu_scheduler_starting() indicating that context switches had occurred before RCU ended its special early-boot handling of grace periods. This is a dangerous condition, as it indicates that RCU might have prematurely ended grace periods. This exploratory fix moves rcu_scheduler_starting() earlier in boot. Reported-by: Ingo Molnar Signed-off-by: Paul E. McKenney Signed-off-by: Ingo Molnar --- init/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'init') diff --git a/init/main.c b/init/main.c index 11f4f145be3f..525f6fb2bd22 100644 --- a/init/main.c +++ b/init/main.c @@ -451,6 +451,7 @@ static noinline void __init_refok rest_init(void) { int pid; + rcu_scheduler_starting(); kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND); numa_default_policy(); pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES); @@ -462,7 +463,6 @@ static noinline void __init_refok rest_init(void) * at least once to get things moving: */ init_idle_bootup_task(current); - rcu_scheduler_starting(); preempt_enable_no_resched(); schedule(); preempt_disable(); -- cgit v1.2.3-70-g09d2